The decrease in phase angle measured by bioelectrical impedance analysis reflects the increased locomotive syndrome...

Area of Science:

• Gerontology
• Biomedical Engineering
• Physical Medicine

Background:

• Locomotive Syndrome (LS) risk assessment is crucial for evaluating physical ability.
• Phase angle, measured by bioelectrical impedance analysis (BIA), reflects cellular health and muscle mass.
• The relationship between phase angle, muscle mass, and LS risk stages requires further investigation.

Purpose of the Study:

• To investigate the association between muscle mass, phase angle, and Locomotive Syndrome (LS) risk stages.
• To compare the efficacy of phase angle and muscle mass as indicators of LS risk.

Main Methods:

• A prospective cohort study involving 311 participants undergoing health checkups.
• Assessment of LS risk using the two-step test, stand-up test, and 25-question geriatric locomotive function scale.
• Measurement of muscle mass and phase angle via bioelectrical impedance analysis (BIA).

Main Results:

• Phase angle significantly decreased with advancing LS risk stages.
• Muscle mass did not show a significant difference across LS risk stages, particularly between no risk and stage 1.
• Adjusted analyses confirmed phase angle's significant difference across all LS risk stages.

Conclusions:

• Phase angle is a stronger indicator of LS risk than muscle mass.
• Significantly reduced phase angle is observed in later LS risk stages.
• Phase angle serves as a valuable screening tool for identifying individuals at risk of Locomotive Syndrome.